Supersaturation is a key stage of crystal growth as it provides more ... essentially cooks itself and organ failure is a real risk. In the Cave of the Crystals, such heat and humidity means ...

Crystal Cave, the ancient marble cavern at the end of a steep half-mile hike in Sequoia National Park, is slated to reopen to visitors this summer after four years of closure.

U.S. News Insider Tip: Café Olé, just outside the Crystal & Fantasy Caves, has one of the best fish sandwiches on the island. A sun hat is essential because you'll sit in the garden while they ...